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French national Peter Cherif (C) alleged associate of the Kouachi brothers, perpetrators of 2015 Charlie Hebdo attack, boards a plane as he is extradited to France at Djibouti International Airport in Djibouti on December 22, 2018. - Cherif was arrested the Djibouti national police in December 16, 2018. (Photo by Houssein Hersi / AFP) (Photo credit should read HOUSSEIN HERSI/AFP/Getty Images)

French national Peter Cherif (C) alleged associate of the Kouachi brothers, perpetrators of 2015 Charlie Hebdo attack, boards a plane as he is extradited to France at Djibouti International Airport in Djibouti on December 22, 2018. - Cherif was arrested the Djibouti national police in December 16, 2018. (Photo by Houssein Hersi / AFP)        (Photo credit should read HOUSSEIN HERSI/AFP/Getty Images)